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MAUREEN M REGAN MD
NPI 1477532273
Internal Medicine in Sonora, CA

Active since January 11, 2006PECOS Enrolled
690 GUZZI LN STE C, SONORA, CA 95370(209) 533-0333(209) 533-2749 Get Directions Write a Review

NPPES record last updated: September 17, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Maureen M Regan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MAUREEN M REGAN MD (NPI 1477532273) is an individual internal medicine provider in Sonora, California, licensed in California (G61154) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1477532273
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMAUREEN M REGANCredential: MD
Location Address690 GUZZI LN STE CSonora, CA 95370-5292
Mailing Address690 Guzzi Ln Ste CSonora, CA 95370-5292 · (209) 533-0333 · Fax (209) 533-2749
Phone(209) 533-0333
Fax(209) 533-2749
Sole ProprietorNo
Enumeration DateJanuary 11, 2006
Last NPPES UpdateSeptember 17, 2008
✔ NPI 1477532273 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G61154
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
690 GUZZI LN STE C, Sonora, CA 95370
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Other Identifiers 2

Medicare UPINF15485CA
Medicare PIN00G611545CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Maureen M Regan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Maureen Regan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Native American Health Center, Inc
102 mi
Federally Qualified Health Center (FQHC)
2950 INTERNATIONAL BLVD
Oakland, CA 94601
  • Reassigned Medicare billing, California enrollment
  • 71 clinicians in this Medicare group
NPI 1619147030 (510) 485-5906

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95370 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$133.94 typical visit price
range $58.87 – $176.60
Typical copayment $33.48 (range $14.71 – $44.15)
Most-billed visit code 99204
Established Patient
$103.36 typical visit price
range $19.28 – $144.60
Typical copayment $25.84 (range $4.82 – $36.15)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier12 claims12 services$768.64 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DEBORAH LYNN GOREHAM FNP-C
Nurse Practitioner (Family)
690 GUZZI LN STE C
SONORA, CA 95370
Tuolumne County (209) 533-0333
JANENE R PHILLIPS RN, FNP
Nurse Practitioner (Adult Health)
690 GUZZI LN STE C
SONORA, CA 95370
Tuolumne County (209) 233-0333
DR. MARTIN DEILMANN M.D.
Phlebology
690 GUZZI LN STE C
SONORA, CA 95370
Tuolumne County (209) 533-0333

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Maureen Regan's NPI number?

The NPI number for Maureen Regan is 1477532273. It was assigned to this individual provider in the NPPES registry on January 11, 2006.

Where is Maureen Regan located?

Maureen Regan practices at 690 Guzzi Ln Ste C, Sonora, CA 95370. The listed phone number is (209) 533-0333.

What is Maureen Regan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Maureen Regan enrolled in Medicare?

Yes. Maureen Regan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Maureen Regan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maureen Regan reassigns Medicare benefits to Native American Health Center, Inc (Oakland, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Maureen Regan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Maureen Regan was last updated on September 17, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.